I wouldn't rush back to them to be honest, fitted the grooved discs and Kevlar pads all round last year and within 2 months the discs were running off, as I was told by Hypertech who checked them for me on contacting godspeed they were no help at all and wanted the discs sent back so they could check them and fix them when I asked for a replacement pair they said they would only replace if they couldn't fix it and if it's only 1 then they would only replace 1 and not as pairs, which I think is crap and also for the cost of posting a set of discs to them and return you can get them skimmed locally so I never bothered.